From e9c43e9e4030932ea974952bb5b62cd8ad499e50 Mon Sep 17 00:00:00 2001
From: jl777 <jameslee777@yahoo.com>
Date: Fri, 27 Jul 2018 00:46:54 -1100
Subject: [PATCH] Prevent bid for nonexistent assetid

---
 src/cc/CCassetstx.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/cc/CCassetstx.cpp b/src/cc/CCassetstx.cpp
index 34da82b70..d3a887c06 100644
--- a/src/cc/CCassetstx.cpp
+++ b/src/cc/CCassetstx.cpp
@@ -198,12 +198,17 @@ std::string AssetTransfer(int64_t txfee,uint256 assetid,std::vector<uint8_t> des
 
 std::string CreateBuyOffer(int64_t txfee,int64_t bidamount,uint256 assetid,int64_t pricetotal)
 {
-    CMutableTransaction mtx; CPubKey mypk; struct CCcontract_info *cp,C;
+    CMutableTransaction mtx; CPubKey mypk; struct CCcontract_info *cp,C; uint256 hashBlock; CTransaction vintx;
     if ( bidamount < 0 || pricetotal < 0 )
     {
         fprintf(stderr,"negative bidamount %lld, pricetotal %lld\n",(long long)bidamount,(long long)pricetotal);
         return(0);
     }
+    if ( GetTransaction(assetid,vintx,hashBlock,false) == 0 )
+    {
+        fprintf(stderr,"cant find assetid\n");
+        return(0);
+    }
     cp = CCinit(&C,EVAL_ASSETS);
     if ( txfee == 0 )
         txfee = 10000;